1819422020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{162739}}^1$

素因数の和:162804

約数の個数: 48

約数和(自身を含む): 4210409280

約数和(自身を除く): 2390987260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 162739, 325478, 650956, 813695, 1627390, 2115607, 3254780, 4231214, 6997777, 8462428, 10578035, 13995554, 21156070, 27991108, 34988885, 42312140, 69977770, 90971101, 139955540, 181942202, 363884404, 454855505, 909711010, 1819422020]

約数ペア:

[(1, 1819422020), (2, 909711010), (4, 454855505), (5, 363884404), (10, 181942202), (13, 139955540), (20, 90971101), (26, 69977770), (43, 42312140), (52, 34988885), (65, 27991108), (86, 21156070), (130, 13995554), (172, 10578035), (215, 8462428), (260, 6997777), (430, 4231214), (559, 3254780), (860, 2115607), (1118, 1627390), (2236, 813695), (2795, 650956), (5590, 325478), (11180, 162739)]